Well, there were about 13 members that contributed to the entire layout Sir Dillon. Of those about 7 of them contributed MOCs, 8 of them minifigs, and just about everyone baseplates to the castle section.
Which castle did you mean Umgarla?
The really large multilevel castle at the one end of the layout was done by a guy named Peter, but he just created his brickshelf account the other day.
A guy named John built the grey keep that's really close to the bridge.
I built the central castle in the walled city I did have some WIP pictures of it as I built it. I also built the small black and red castle with the airship next to it...no individual pics of it are on brickshelf.